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South King County Fire Rescue responded to the scene. A spokeswoman said the victim had to be extricated from his car.

“It’s a wonderful tool and it’s also a deterrent for crime, and in this case, we were able to verify what the witnesses told us,” Stieben said. He said there are about 30 of the so-called "safe cities" cameras on at intersections and on streets in Federal Way. They were installed last year.

"There are at least four cameras on Pacific Highway South," he said.

The 35-year-old driver was not injured but was arrested at the scene for investigation of vehicular homicide and taken to a hospital to have his blood drawn. Stieben said alcohol is suspected in the collision.

Investigators from the Washington State Patrol's criminal investigations unit also responded.

The intersection was blocked in all directions for 4 1/2 hours. It re-opened shortly before 7 a.m.